At a glance
What can fail
Ignition switch terminals can corrode if exposed to salt water or other liquids, potentially cutting electrical power or allowing the engine to run without the key being able to shut it off.
What the fix does
Dealers will install a protective cover on the ignition switch connector and replace any corroded ignition wires and harnesses at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.